468 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



of well-developed setae, segments 2-7 with only 2 pairs. Ventrally 

 segments 1 and 2 with 2 pairs of setae, 3-9 with 1 pair. Ninth tergmn 

 brown, with 2 pairs of setae. Anal sclerite brown (fig. 6,^); claw 

 with 2 pairs of accessory teeth (fig. Q,g). 



Pupa. — Length 4.5 mm., width 1 nmi. Labrum quadrate; apical 

 bristle group with 4 setae, basal with 3 setae. Mandibles identical; 

 inner margin with a strong distal tooth and serrate edge below (fig. 

 7,d). Hook plates anteriorly on segments 2-8 (eighth very small, 

 often absent on females), posteriorly on 4 (fig. 7,c). Apex of abdo- 

 men without setae. 



Case. — Typically glossosomatid (fig. 7,a,b). Anterior and poste- 

 rior ventral openings firmly formed of silk with small embedded 

 sand grains, projecting further ventrad than middle of case. Lateral 

 surface generally formed of 1 larger sand grain. Respu-atory open- 

 ings left irregularly between sand grains dorsally. 



Material. — Larvae and pupae from type localities in Rio Papal- 

 lacta and in Rio San Carlos. 



Mortoniella angulata, new species 



Figure 5,e 



Because I have only pharate adults of this species, I can give no 

 diagnosis of the venation. However, the genitalia show it to be 

 so closely related to apicvlata that I have no hesitation in placing 

 the species in Mortoniella. 



The species is closest to apiculata but is readily separated by the 

 dorsal process of the aedeagus, which is not expanded apicaUy, and 

 by the proportionate shortness of the genital capsule. 



Adult. — Length of body 3-4 mm. Male genitalia (fig. 5,6): 

 Ninth segment almost quadrate in lateral view, slightly oblique; 

 tenth tergum with an elevated basomesal area extending about two- 

 thirds length of lateral lobes which are divided by a deep narrow 

 incision; dorsal process of aedeagus sharply angulate dorsaUy before 

 apex which is terete, lateral processes of adeagus simple, rodlike; 

 ventrad to aedeagus 2 short basal rods, and near midlength 2 paired 

 processes which are subequal in length; ventral sm-face of aedeagus 

 sclerotized in form of paired spatulate processes. 



Holotype cf, allotype 9, paratypes 4 cf, 1 9, all pharate adults: 

 Ecuador: stream 11 miles west of Pujili, 12,500 feet, Mar. 15, 1958, 

 R. W. Hodges (USNM Type 66019). 



Larva. — Except for their slightly smaller size, no differences 

 found between this species and apiculata. 



Pupa. — Appears identical to that of apiculata. 



