296 COLLECTIONS PROM MELANESIA. 



4-6 fms., in Dr. Coppinger's second collection (No. 130), which has 

 the terminal postahdominal segment broken. 



These specimens, although males, have a distinct dorsal carina on 

 the carapace, in this particular agreeing with Mr. Haswell's descrip- 

 tion of the female and differing from the specimens he regards as 

 the males of this species. 



P. granulosus comes very near to P. monoceros, Fabricius, which 

 species, however, has no lateral spines on the margins of the terminal 

 segment. 



18. Penaeus velutinus, Dana. 



Here are referred two specimens (one of which is an adult male) 

 from Port Darwin, 12 fms. ; a specimen from Albany Island, 3-4 

 fms. ; and a small example from Thursday Island, 4-5 fms. 



For remarks upon the specific characters and geographical range 

 of this widely-distributed species, I may refer to my paper on 

 Crustacea from the coast of Senegambia * and memoir on the 

 Penseideaf. 



I may add that in P. velutinus there are present an antennal 

 and hepatic spine, and a third spine (the branchiostogal ?) situated 

 on the anterior margin of the carapace below the eye-peduncles ; 

 also usually a minute supraorbital spinule or denticle, or a notch 

 indicative of its position, in the anterior margin. 



19. Penaeus batei. (Plate XXXII. fig. D.) 



The carapace and postabdomen are covered with a very short 

 close pubescence as in P. velutinus. The carapace has scarcely any 

 traces of sulci, and has a well-developed antennal and a small 

 hepatic spine ; also a very small pterygostomian spine or spinule. 

 The rostrum scarcely reaches beyond the ends of the peduncles of 

 the antennules ; it is scarcely prolonged at all backward as a median 

 longitudinal dorsal crest : its distal extremity curves slightly up- 

 ward and is acute ; its lower margin is entire ; its upper margin is 

 armed with two teeth placed just in front of the anterior margin of 

 the carapace ; behind these, on the gastric region of the carapace, is 

 a rudimentary tooth. The third to sixth segments of the post- 

 abdomen are carinated in the dorsal median line ; the carina on the 

 sixth segment ends in a small spinule on the posterior margin of 

 this segment. The terminal segment is slightly longer than the 

 preceding, narrow, longitudinally carinated above, and terminates in 

 a strong spine, on either side of which are three lateral spines, of 

 which those nearest to the distal extremity are smaller and placed 

 immediately above the preceding. The e) r es are large, much more 

 dilated than their short peduncles. The terminal joint of the 

 peduncles of the antennules is shorter than the preceding ; the 

 flagclla subequal and very short, not so long as the peduncles. The 



* Ann. & Mag. Nat. Hist. ser. 5, viii. p. 367 (1881). 

 t Proc. Zool. Soc. p. 304 (187S). 



