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FIELDIANA: ZOOLOGY, VOLUME 42 



strongly concave posterior margin of the epigynial plate; the adanal 

 setae are long and slender, reaching the base of the postanal seta, and 

 located laterad to the posterior margin of the anal opening. The 

 venter has 6-8 pairs of short and 3 pairs of long slender setae. 



\4^ 





n^-rf' 



B 



Fig. 32. Echinolaelaps ornatus, female: A, anterior portion of dorsal plate; 

 B, posterior portion of dorsal plate; C, venter. 



Specimens examined. Visayas: Basey, Samar, September, 1945, 

 9 females, ex Rattus norvegicus norvegicus Berkenhort. Mindanao: 

 Malasila, Kidapawan, Cotabato, December 2, 1946 (F. G; Werner), 

 23 females, ex Rattus sp. On the eastern slope of Mount Apo, 

 2800 ft. elevation, Davao, October 18, 1946 (G. Alcasid), 4 females, 

 ex Rattus everetti. Tagum, Davao, October 10, 12, 14, 1946 (F. G. 

 Werner and H. Hoogstraal), 9 females, ex Rattus mindanensis. 

 Palawan: Calamianes Island Group, Siuk, Culion Island, April 7, 

 1947 (M. Celestino), female, ex Sciurus culionensis Sanborn. 



Echinolaelaps ornatus, new species. Figure 32, A-C. 



The characteristic sculpturing of the dorsal plate, the long, heav- 

 ily sclerotized sternal plate, and the greatly expanded epigynial plate 

 laterad of setae III readily distinguish this species. 



FEMALE: All gnathosomal and hypostomal setae short; epipharynx with 

 groove; pilus dentilis short, pointed apically; chelae toothed. Dorsal plate 1160 n 



