34 PEOOEEDINGS OF THE NATIOIs^AL MUSEUM. vol.60. 



Clypeal foveolee 2X2. First three tergites in general form as in the 

 other three species here described, the lateral and ventral portions of 

 the second and third prominently angled, the two portions evenly 

 rounding together on the fourth and following segments. The seg- 

 mental suture absent or obscure above, though showing more traces 

 than in virilis. The ridges liniting striae beneath not projecting in 

 spinous points behind, as they do, for example, in virilis and cratus. 

 The sides of the sternites anteriorly only weakly divergent. Caudal 

 end of last tergite depressed, under lens seen to be more strongly 

 and densely coriariously roughened than the anterior portion. Last 

 sternites very obtusely angled behind (pi. 13, fig. 9). 



Number of segments, female, 41. 



Length, about 96 mm.; width, 12.5 mm. 



Locality. — Guatemala : Coban, Samac coffee plantation, one female, 

 May, 1904. 



Type.— C^it No. 841, U.S.N.M. 



This species suggests 0. virilis., the types of which come from the 

 same locality. It differs in color and color pattern in not having the 

 ventral ridges of segments spinous-pointed behind, in having the last 

 tergite strongly coriariously roughened behind and transversely 



sulcate. 



Genus SPIROBOLELLUS Pocock (an sen. str.?). 



77. SPIROBOLELLUS ATRICULUS Pocock. 



Spiroholellus articulus Pocock. Biol. Centr.-Amer.. Diplop., 1908, p. 8S, pi. 7, 

 figs. 9-9c. 



Locality. — Guatemala : Volcan de Agua. 



Genus ALLOPOCOCKIA Brblemann. 



78. ALLOPOCOCKIA TYLOPUS (Pocock). 



Spiroholellus tylopns Pocock, Biol. Centr.-Amer., Diplop., 1908, p. 87, pi. 7, 



figs. 8-8d. 

 AllopococMa tylopus Brolemann, Ann. Soc. Ent. France, 1914, p. 34. 



T.ocality. — Guatemala : Tecpam. 



AROLUS, new genus. 



Collum triangularly narrowed down each side, the angle narrowly 

 rounded below. Median plate of anterior gonopods (coleopods) of 

 male reduced in size, slenderly triangular ; coxse broad, meeting over 

 median plate and with mesodistal angles produced ; telopodite deeply 

 bifid, as in AUopocockia. Tracheal stalk from posterior gonopod very 

 long, broad (see pi. 14, fig. 2). Anterior legs of male, particularly 

 of third to seventh pairs, inclusive, strongly swollen beyond coxkb to 

 second tarsal joint, which narrows conically distad. No special 

 tubercle on first tarsal joint of any of the legs. Third to sixth legs 



