376 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Students interested in field natural history will find Dr. Worcester's 

 book a fascinating volume. 



Dr. Worcester later became a member of the United States Philip- 

 pine Commission and still later the Secretary of Interior of the 

 Philippine Islands. During all this period, and later as a private 

 citizen up to his death, he maintained an interest in the natural history 

 of the islands and collected material that has been in my hands for 

 report. 



Col. Edgar A. Mearns, U. S. Army, made many collections during 

 his periods of service in the Philippine Islands. Among his many 

 expeditions he made one to Mount Halcon, the highest peak in 

 Mindoro. On this expedition many land shells were collected. 

 Among the novelties obtained on that expedition and here described 

 is Cochlostyla lillianae, an exquisitely beautiful shell, of which, unfor- 

 tunately, only the type is known. 



To put definitely on record the ground covered by that Mount 

 Halcon Expedition, I shall quote Colonel Mearns' itinerary: 



Left Manila 7:30 p. m. October 30, 1906, on U. S. A. T. Mindanao. Party 

 accompanied to Calapan by Horace C. Fletcher. Arrived Calapan daybreak 

 October 31. Left Calapan in two native boats Nov. 1, arriving at Subaan, 9 m. 

 NW. on the coast, at 3 p. m. Left Subaan 9 a. m. Nov. 2, marched 10 m. (5 air 

 line) SW. to Binaybay River, camping on the mining claims of P. T. Bergen and 

 R. E. Burris. Left Bergen Camp 7 a. m. Nov. 5 and marched SW. 1 mile to 

 Mangyan clearing on top of hill, named Buena Vista, elevation 1,200 feet. Pro- 

 ceeded down S. trail to river named the Egbert, distance 1 mile; thence 300 yards 

 down stream to Alag River. Crossed Alag at this point and followed Alag River 

 upstream along east (R.) bank 2 miles to point where the Alag R. forks. Pro- 

 ceeded up east (R.) fork (main Alag R.) naming the west (L.) fork the Lewton 

 R. 1 mile; camped at 4 p. m. (Camp No. 2). Nov. 8, left camp 8 a. m., marched 

 up the Alag 1% m. to small falls, thence up small stream entering main Alag R. 

 from the west (L. bank) 300 yards, thence up ridge on the south side of stream 

 (R. bank) % m. to Mangyan clearing at 2,500 feet elevation, Camp No. 3 at this 

 point. Small stream % m. down R. slope, to the SW. of camp. 



Broke camp 7:30 a. m. Nov. 12, proceeding along trail on S. side of clearing to 

 cogon-covered caingin on crest of ridge, same elevation as Camp No. 3 (2,500 

 feet); thence down Mangyan trail, south, to Alag River. Distance Camp 3 to 

 Alag, 2 miles. Stream entering Alag R. a few yards above a Mangyan bejuca 

 suspension bridge (7 strands) named the Halcon Bridge. The stream was named 

 the Halcon River. We marched up Halcon R. 50 yards and thence up old Mangyan 

 trail to the right (from left bank of Halcon River) , SW., going up parallel to stream; 

 camped at 3:30 p. m. at 3,300 ft. elevation (Camp No. 4). No water found near 

 this camp. 



Nov. 3. Broke camp at 6 a. m. Proceeded along ridge trail a short distance, 

 following it down to caingin area east of ridge summit. Three houses in these 

 clearings; one a mere framework, covered; two covered and inhabited. One 

 large house near S. end of clearing, cleverly hidden (photographed). From 

 this house a Mangyan trail leads down to the Bolton R., where we found plenty 

 of water (as also in a small tributary nearer to the Mangyan house) and cooked 

 breakfast. From camp No. 4 to Bolton R. crossing % m. From Bolton R. 

 proceeded SE. up ridge 1 mile to elevation of 4,500 feet. Camp No. 5. Water, 

 small stream 300 yards down slope to the SW. 



