NO. 14 MILLIPEDS OF WEST INDIES AND GUIANA — LOOMIS 7 



are very similar to those of L. niveus, but the living color was darker. 

 The advisability of attempting to name this species is questioned until 

 specimens with vestiture intact can be examined. 



LOPHOPROCTUS sp. 



Five specimens collected near Orangetown, St. Eustatius, January 

 22, 1932, 



They appear to differ slightly from L. niveus and the Nassau species 

 but are so badly rubbed that only a very incomplete description is 

 possible, and this would complicate rather than aid future systematic 

 work on the genus. 



Subclass CHILOGNATHA 

 Order LIMACOMORPHA 



Family GLOMERIDESMIDAE 

 GLOMERIDESMUS TRINIDADENSIS, n. sp. 



Plate I, fig. 2 



Two males were collected in the Maracas Valley, Trinidad, Febru- 

 ary 13, 1932. 



Diagnosis. — This is decidedly the largest member of the genus. The 

 uncolored head and the shape of the pleurae are additional differences 

 between it and G. mannoreus Pocock, its closest relative. 



Description. — One male lO mm long, the other one 11 mm long, 

 and both 2 mm in diameter. 



Head and ventral surfaces uncolored, yellow in the alcoholic speci- 

 mens ; the color of the segments above as in G. marmoreiis Pocock. 



Pleurae striate in front, their posterior margin simple, not at all 

 serrate, transverse, with the inner corner slightly more than a right 

 angle and not produced as is shown in Pocock's figure. The posterior 

 lateral margin of the first joint of the legs simple, nonserrated. 



The penes are soft, flexible, unchitinized structures, and in speci- 

 mens just removed from alcohol they are distended, and four or five 

 narrow, longitudinal, glabrous areas are to be seen in alternation with 

 transversely striate, setiferous areas of similar width. On drying 

 somewhat, the glabrous areas contract laterally and appear as deep 

 furrows. The distended penes are capable of reaching back over the 

 coxae of seven or eight pairs of legs and are much stouter than after 

 a little drying. 



Ty/)^.— U.S.N.M. no. 1086. 



