102 FIELDIANA: ZOOLOGY, VOLUME 42 



the short adanal setae located behind the posterior margin of the 

 anal opening will readily distinguish this species. 



FEMALE : Gnathosoma with posterior medial hypostomal setae long, about 

 5 times as long as gnathosomal setae; epipharynx with groove; chelae toothed; 

 pilus dentilis slender, with bent, knobbed apex. Dorsal plate 1213 m long, 800 ti 

 wide, well sclerotized, sculptured as figured; setae strong and long except for two 

 small, short pairs of vertical and a pair of submarginal posterior setae. Sternal 

 plate longer than wide, the anterior margin almost straight, the posterior median 

 projection strongly bilobed; anterior pores slightly arched; all sternal and meta- 

 sternal setae strong, subequal in length. Epigynial plate expanded immediately 

 posterior to setae I, the sides parallel to beyond setae III, the posterior margin 

 strongly concave; the distance between setae IV equals the distance between 

 setae I. Anal plate longer than wide, the anterior margin rounded, with charac- 

 teristic sculpture, very narrowly separated from the epigynial plate; adanal setae 

 small, short, not reaching the base of the postanal seta, and located below the 

 posterior margin of the anal opening. Metapodal plates small, pyriform. Venter 

 with 7-8 pairs of short, stout, blunt setae laterad to the epigynial plate. Peritreme 

 extending to anterior margin of coxa I. Spinelike setae on coxae I, II and III 

 stout, blunt. 



Holotype. Female, ex Rattus panglima Robinson. San Pedro, 

 Culion Island, March 30, 1947 (H. Hoogstraal). In the Chicago 

 Natural History Museum collection. 



Paratypes. Five females, same data as holotype. Palawan: 

 Calamianes Island Group, Siuk, Culion Island, April 8, 1947 (M. 

 Celestino), 4 females, ex Rattus panglima Robinson. Puerto Prin- 

 cesa, April 8-9, 1947 (H. Hoogstraal), 2 females, ex Rattus panglima 

 Robinson. Calamianes Island Group, Dimanianga, Busuanga Island 

 (H. Hoogstraal), female, ex Rattus panglima Robinson. One in the 

 United States National Museum. 



Echinolaelaps insignis, new species. Figure 34, A-C. 



The drop-shaped epigynial plate with the slightly concave poste- 

 rior margin, and the wider distance between the anal and epigynial 

 plates readily separate this species from other Echinolaelaps. 



FEMALE: Median posterior pair of hypostomal setae about as long as gnatho- 

 somal setae; epipharynx with ventral groove; pilus dentilis short, pointed apically; 

 chelae toothed. Dorsal plate 892 /x long, 613 m wide, very lightly sculptured; two 

 pairs of vertical setae shorter than most marginal and medial setae, posterior sub- 

 marginal pair very short, not reaching posterior margin of dorsum. Sternal plate 

 slightly longer than wide, posterior median projection bilobed; anterior pores 

 straight, posterior pores angled; sternal and metasternal setae strong, subequal in 

 length. Epigynial plate drop-shaped, posterior margin slightly concave; the dis- 

 tance between setae IV the same as the distance between setae I. Anal plate 

 longer than wide, widely separated from epigynial plate; adanal setae long, strong, 

 and located below anal opening. Venter with 10 pairs of short, strong setae, and 



