PEREZ FARFANTE: AMERICAN SOLENOCERID SHRIMPS 



whole weight, and abdominal weight (cl/tl, cl/ww, 

 cl/aw, tl/ww, tl/aw). They found statistically sig- 

 nificant differences between males and females in 

 all relations with the exception of carapace 

 length/total length. 



Economic importance. -At present this species is 

 not taken commercially. However, dense concen- 

 trations have been located in various areas within 

 its range. Off the west coast of America three 

 deepwater shrimps — Solenocera agassizii Faxon 

 1893; Solenocera florea Burkenroad 1938, and 

 Heterocarpus reedi Bahamonde 1955 — are uti- 

 lized; consequently, it is to be expected that H. 

 diomedeae, a species larger than those mentioned 

 above, eventually will be exploited. 



Pleoticus Bate 1888 



Philonicus Bate 1888:273 [part, excluding Phi- 

 lonicus lucasii (Bate 1881) = Hadropenaeus 

 lucasii, and Philonicus pectinatus Bate 1888 = 

 Solenocera pectinata]. [Type-species, by 



FIGURE 28.— Haliporoides diomedeae, 9 44.5 mm cl, off Punta 

 Topocalma, Colchagua, Chile. Thelycum, ventral view. 



subsequent designation of Fowler 1912:543, 

 Philonicus mulleri Bate 1888]. Preoccupied by 

 Philonicus Loew 1849:144 (Diptera). 



Pleoticus Bate 1888:xii [partj. [Replacement name 

 for Philonicus Bate. Type-species, Philonicus 

 mulleri Bate 1888. Gender, masculine]. 



Faxonia Bouvier 1905a:981 [part, excluding 

 Faxonia diomedeae (Faxon 1893)]. [Type- 

 species, by subsequent designation of Fowler 

 1912:543, Penaeopsis ocularis Faxon 1895 = 

 Pleoticus robustus (Smith 1885)]. 



Parartemesia Bouvier 1905b:747 [part, excluding 

 Parartemesia tropicalis Bouvier 1905b = Meso- 

 penaeus tropicalis (Bouvier 1905b)]. [Type- 

 species, by subsequent designation of Fowler 

 1912:543, Parartemesia carinata Bouvier 1905b 

 = Pleoticus muelleri (Bate 1888)]. 



Haliporus. Bouvier 1906b: 1 [part]; 1908:78 [part]. 

 A. Milne Edwards and Bouvier 1909:206 [part], 

 de Man 1911:31 [part]. Fowler 1912:542 [part]. 



Hymenopenaeus. Smith 1885:179 [part]. Burken- 

 road 1936:102 [part]. Kubo 1949:212 [part]. 

 Roberts and Pequegnat 1970:29 [part]. 



Diagnosis-Body robust, carapace elongate, integ- 

 ument thick, firm. Rostrum moderately long, 

 reaching midlength of second antennular article 

 or slightly overreaching peduncle; ventral margin 

 straight -to concave; armed only with dorsal teeth; 

 epigastric tooth and first rostral separated by 

 interval equal to, or only slightly greater than, 

 that between first and second rostral teeth. 

 Orbital, postorbital, antennal, and hepatic spines 

 present; pterygostomian spine absent; branchio- 

 stegal spine present or absent. Cervical sulcus 

 deep, long, extending to, but not across, mid- 

 dorsum of carapace; hepatic sulcus well marked; 

 posthepatic and branchiocardiac carina lacking; 

 branchiocardiac sulcus usually absent; sub- 

 marginal carina sharp; posthepatic carina absent. 

 Abdomen carinate dorsally at least along pos- 

 terior three somites. Telson with pair of conspic- 

 uous, fixed lateral spines. Prosartema long or 

 moderately long, flexible. Antennular flagella 

 similar, subcylindrical, and longer than carapace. 

 Mandibular palp two jointed, articles broad, distal 

 one as long, or almost as long, as basal, tapering 

 to blunt apex. First maxilla with unsegmented 

 palp, gently narrowing to rounded apex. Fourth 

 and fifth pereopods rather stout proximally, fifth 

 moderately longer than fourth. First pereopod 

 with spine on basis and ischium. Exopods on all 

 maxillipeds and pereopods. Lateral ramus of 



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