32 PEOCEEDINGS OF THE. NATIONAL MUSEUM. vol. 63, 



In this genus there are inch^ded besides the type a subspecies of 

 the same, G. porcelU perfoliatus (Neumann), a new species to be 

 described in this paper and probably the Gyropus decuratus of 

 Neumann. It will be necessary to study the hypopharyngeal chitini- 



zations of this latter species before its generic 

 affinities can be ascertained with certainty. 



KEY TO SPECIES OF GI.IRICOLA. 



ff.' Lateral chitinizations of basal plate of female 

 genital armature thickened ; male genital 

 armature with pararaeres strongly curved 

 and claw-shaped endomeres present. 



G. distincta, new species. 



«.^ Lateral chitinizations of basal plate of female 

 genital armature more slender; male gen- 

 ital armature with almost straight parameres 

 and no well-chitinized endomeres. 



Or. porcelli (Linnaeus). 



GLIRICOLA DISTINCTA, new species. 



Text fig. 16. 



Head longer than broad, with posterior 

 margin semicircular; antennal fossae long 

 Fig. 15.— GLIRICOLA for- and deep, its inner margin with three emar- 



CELLi. Outer chitini/.a- • j.- - i •ii i - „ 



TioNs OF HYPOPHARYNx. gmatious ; autenuac each with last seg- 

 ment greatly swollen and pedicellate, its 

 anterior margin with a great notch and its tip truncate. This 

 last segment is scaled, from its truncate tip there arises five straight 

 setae, and situated at this tip is the large sensory pit. Palpi extend- 

 ing beyond the margin of the head by the full length of the last seg- 

 ment, which is about twice as long as broad. Prothorax almost as 

 broad as the head and about twice as broad as long. Mesothorax 

 entirety fused with metathorax; this combined segment is slightly 

 longer and slightly broader than the prothorax. Abdomen fron> 

 two or three times as long as broad, being bigger and stouter in 

 the female than in the male, first segment longer than the others^ 

 except for the last. Gonopods semicircular and scooplike and prac- 

 tically continuous with the posterior abdominal lobes. The setae 

 on a single gonopod are as follows from the front backward: First, 

 at the base of the gonopod, is a simple, curved seta ; next comes two 

 subequal narrow foliaceous setae slightly longer than the simple 

 seta; lastly, are three broader and longer foliaceous setae, each of 

 which ends in a slender spine. Each gonopod ends in a hyaline plate 

 which extends beyond the abdominal lobes. Abdominal lobes low 

 and each terminated by a pair of approximate foliaceous setae. 



I 



